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- W2073670186 abstract "The present study contrasts mathematical knowledge that two sixth-grade teachers apparently used when teaching fraction multiplication with the Connected Mathematics Project materials. The analysis concentrated on those tasks from the materials that use drawings to represent fractions as length or area quantities. Examining the two teachers' explanations and responses to their students' reasoning over extended sequences of lessons led to a theoretical frame that emphasizes relationships between teachers' unit structures and pedagogical purposes for using drawings. In particular, the present study builds on the distinction made in past research between reasoning with two and with three levels of quantitative units and demonstrates that reasoning with three levels of units is necessary but insufficient if teachers are to use students' reasoning with units as the basis for constructing generalized numeric methods for fraction arithmetic. Teachers need also to assemble three-level unit structures with flexibility supported by drawn versions of the distributive property." @default.
- W2073670186 created "2016-06-24" @default.
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- W2073670186 date "2008-01-18" @default.
- W2073670186 modified "2023-09-24" @default.
- W2073670186 title "Mathematical Knowledge for Teaching Fraction Multiplication" @default.
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- W2073670186 doi "https://doi.org/10.1080/07370000701798529" @default.
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